Page 4 - meitijia

Climate Tibet’s complicated topography and atmospheric currents have formed the unique plateau climate. The general climate trend is warmth and humidity in the southeast and frigid aridness in the northwest, manifest in tropical, subtropical, temperate, sub-frigid, and frigid climatic zones and humid, sub-humid, arid, semi-arid climatic regions from the southeast to northwest. Different regions, moreover, usually experience stark contrasts in weather. Tall mountains feature vertical climate zones, characterized by long durations of sunshine, intense solar radiation, low atmospheric temperature, a wide daily range of temperature, clearly demarcated wet and dry seasons, heavy night rain, dry, windy winters and springs, low atmospheric pressure, and low oxygen. The average temperature throughout the year is between -2.8 and 11.9 degrees Celsius. Annual precipitation is between 74.8 and 901.5 millimeters. Rainfall from June to September accounts for 80 to 90 percent of yearly precipitation. Lhasa, located in the temperate semi-arid monsoon climate zone on the Tibet Plateau, has an average 3,000 hours of sunshine per year, and is hence known as “City of Sunshine.” Lhasa has comparatively temperate weather all year round, with summers not excessively hot nor and winters not freezing cold, although there is a considerable difference between day and night temperatures in a single day. The average temperature in June is 15.7 degrees Celsius, with an average maximum temperature of 22.9 degrees Celsius. In January, the average temperature is -2 degrees Celsius, with an average minimum temperature of -9.7 Celsius. Annual precipitation